Description
2008 Buick LaCrosse 3.8L TCM Transmission Control Module – Programmed Plug & Play
This Transmission Control Module (TCM / TCU) is a genuine OEM replacement for all 2008 Buick LaCrosse 3.8L models. Each unit is pre-programmed to your vehicle’s VIN and updated to the latest manufacturer calibration for a true plug-and-play installation with no dealer visit required.
Built to OEM standards for reliability, shift quality, and long-term performance.
Strict Testing & Quality Assurance
Each TCM is fully refurbished, bench-tested, and inspected by our certified in-house technicians.
We use professional off-board testing equipment to verify:
Proper CAN-bus communication
Shift-solenoid activation
Input/Output sensor signal validation
Temperature and load simulation
Live-data performance under simulated driving conditions
No module leaves our facility without passing a full quality control inspection. This ensures you receive a unit that performs better than new at an unbeatable value.
Common Symptoms of a Faulty TCM
Hard shifting / delayed shifting
Gear slipping
Stuck in Limp Mode
Transmission overheating
Erratic gear changes
Poor fuel economy
Trouble codes related to shift solenoids or communication
Important Note
This TCM is fully programmed and updated and does not require additional programming after installation.
Simply install the unit and the vehicle will recognize it automatically.
If your original TCM has unique calibration or custom parameters, we also offer a TCM Cloning Service, which transfers all data-including VIN, shift adaptations, and configuration settings-into the replacement unit.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Ryan Torres –
Installed the 2008 Buick LaCrosse 3.8L TCM module without any issues—truly a straightforward plug-and-play experience. The transmission shifting felt noticeably smoother right after the replacement, and I appreciated how quickly it arrived. Overall, this part worked exactly as described, and the support team was helpful when I had a couple of questions. Definitely recommend for anyone needing a reliable transmission control module.
Shane Marshall –
The plug-and-play setup made installation a breeze, and the free shipping was a nice bonus. Communication was clear, and I had my car running in no time!
Liam Turner –
Installed this TCM module in minutes with zero hassle—my LaCrosse shifts perfectly again. Fast delivery and works just as advertised!